EP0145396A3 - Codeword decoding - Google Patents

Codeword decoding Download PDF

Info

Publication number
EP0145396A3
EP0145396A3 EP84308187A EP84308187A EP0145396A3 EP 0145396 A3 EP0145396 A3 EP 0145396A3 EP 84308187 A EP84308187 A EP 84308187A EP 84308187 A EP84308187 A EP 84308187A EP 0145396 A3 EP0145396 A3 EP 0145396A3
Authority
EP
European Patent Office
Prior art keywords
codeword decoding
codeword
decoding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84308187A
Other versions
EP0145396A2 (en
EP0145396B1 (en
Inventor
Peter Fraser Ross
Ian William Rodgers
Rupert Leslie Alexander Goodings
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crosfield Electronics Ltd
Original Assignee
Crosfield Electronics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Crosfield Electronics Ltd filed Critical Crosfield Electronics Ltd
Publication of EP0145396A2 publication Critical patent/EP0145396A2/en
Publication of EP0145396A3 publication Critical patent/EP0145396A3/en
Application granted granted Critical
Publication of EP0145396B1 publication Critical patent/EP0145396B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
    • H03M7/425—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory for the decoding process only

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
EP84308187A 1983-12-08 1984-11-26 Codeword decoding Expired - Lifetime EP0145396B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8332772 1983-12-08
GB8332772 1983-12-08

Publications (3)

Publication Number Publication Date
EP0145396A2 EP0145396A2 (en) 1985-06-19
EP0145396A3 true EP0145396A3 (en) 1985-07-10
EP0145396B1 EP0145396B1 (en) 1990-04-04

Family

ID=10553013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84308187A Expired - Lifetime EP0145396B1 (en) 1983-12-08 1984-11-26 Codeword decoding

Country Status (4)

Country Link
US (1) US4647908A (en)
EP (1) EP0145396B1 (en)
JP (1) JPS60140981A (en)
DE (1) DE3481885D1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03143028A (en) * 1989-10-27 1991-06-18 Yamaha Corp Decoding circuit for variable length code
JPH03145223A (en) * 1989-10-30 1991-06-20 Toshiba Corp Variable length code demodulator
US5136290A (en) * 1990-06-18 1992-08-04 Bond James W Message expansion decoder and decoding method for a communication channel
US5034742A (en) * 1990-06-19 1991-07-23 The United States Of America As Represented By The Secretary Of The Navy Message compression encoder and encoding method for a communication channel
US5857088A (en) * 1991-10-24 1999-01-05 Intel Corporation System for configuring memory space for storing single decoder table, reconfiguring same space for storing plurality of decoder tables, and selecting one configuration based on encoding scheme
AU3247393A (en) * 1991-12-23 1993-07-28 Intel Corporation Circuitry for decoding huffman codes
US5325092A (en) * 1992-07-07 1994-06-28 Ricoh Company, Ltd. Huffman decoder architecture for high speed operation and reduced memory
US5351047A (en) * 1992-09-21 1994-09-27 Laboratory Automation, Inc. Data decoding method and apparatus
US5343195A (en) * 1992-12-18 1994-08-30 Thomson Consumer Electronics, Inc. Variable length codeword decoding apparatus
US5615020A (en) * 1993-05-13 1997-03-25 Keith; Michael System and method for fast huffman decoding
US5793896A (en) * 1995-03-23 1998-08-11 Intel Corporation Ordering corrector for variable length codes
US5748790A (en) * 1995-04-05 1998-05-05 Intel Corporation Table-driven statistical decoder
US5646618A (en) * 1995-11-13 1997-07-08 Intel Corporation Decoding one or more variable-length encoded signals using a single table lookup
US5848195A (en) * 1995-12-06 1998-12-08 Intel Corporation Selection of huffman tables for signal encoding
US5821887A (en) * 1996-11-12 1998-10-13 Intel Corporation Method and apparatus for decoding variable length codes
TWI276123B (en) 2003-11-05 2007-03-11 Tdk Corp Coil device
JP4502384B2 (en) * 2004-11-25 2010-07-14 キヤノン株式会社 Variable length code decoding apparatus and variable length code decoding method
JP2008252230A (en) * 2007-03-29 2008-10-16 Toshiba Corp Image decoding device, and image decoding method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701111A (en) * 1971-02-08 1972-10-24 Ibm Method of and apparatus for decoding variable-length codes having length-indicating prefixes
US4312018A (en) * 1979-01-31 1982-01-19 Sharp Kabushiki Kaisha Demodulator in a facsimile system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5579565A (en) * 1978-12-12 1980-06-16 Fujitsu Ltd Picture signal decoding system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701111A (en) * 1971-02-08 1972-10-24 Ibm Method of and apparatus for decoding variable-length codes having length-indicating prefixes
US4312018A (en) * 1979-01-31 1982-01-19 Sharp Kabushiki Kaisha Demodulator in a facsimile system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 17, no. 11, April 1975, pages 3328-3329, New York, US; W.R. McCRAY: "Translating a variable-length code" *

Also Published As

Publication number Publication date
DE3481885D1 (en) 1990-05-10
EP0145396A2 (en) 1985-06-19
US4647908A (en) 1987-03-03
JPH0525224B2 (en) 1993-04-12
JPS60140981A (en) 1985-07-25
EP0145396B1 (en) 1990-04-04

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